1: \ CROSS.FS The Cross-Compiler 06oct92py
2: \ $Id: cross.fs,v 1.9 1994/07/21 10:52:37 pazsan Exp $
3: \ Idea and implementation: Bernd Paysan (py)
4: \ Copyright 1992 by the ANSI figForth Development Group
5:
6: \ Log:
7: \ changed in ; [ to state off 12may93jaw
8: \ included place +place 12may93jaw
9: \ for a created word (variable, constant...)
10: \ is now an alias in the target voabulary.
11: \ this means it is no longer necessary to
12: \ switch between vocabularies for variable
13: \ initialization 12may93jaw
14: \ discovered error in DOES>
15: \ replaced !does with (;code) 16may93jaw
16: \ made complete redesign and
17: \ introduced two vocs method
18: \ to be asure that the right words
19: \ are found 08jun93jaw
20: \ btw: ! works not with 16 bit
21: \ targets 09jun93jaw
22: \ added: 2user and value 11jun93jaw
23:
24: \ include other.fs \ ansforth extentions for cross
25:
26: : comment? ( c-addr u -- c-addr u )
27: 2dup s" (" compare 0=
28: IF postpone (
29: ELSE 2dup s" \" compare 0= IF postpone \ THEN
30: THEN ;
31:
32: decimal
33:
34: \ Begin CROSS COMPILER:
35:
36: \ GhostNames 9may93jaw
37: \ second name source to search trough list
38:
39: VARIABLE GhostNames
40: 0 GhostNames !
41: : GhostName ( -- addr )
42: here GhostNames @ , GhostNames ! here 0 ,
43: name count
44: \ 2dup type space
45: dup c, here over chars allot swap move align ;
46:
47: hex
48:
49:
50: Vocabulary Cross
51: Vocabulary Target
52: Vocabulary Ghosts
53: VOCABULARY Minimal
54: only Forth also Target also also
55: definitions Forth
56:
57: : T previous Cross also Target ; immediate
58: : G Ghosts ; immediate
59: : H previous Forth also Cross ; immediate
60:
61: forth definitions
62:
63: : T previous Cross also Target ; immediate
64: : G Ghosts ; immediate
65:
66: : >cross also Cross definitions previous ;
67: : >target also Target definitions previous ;
68: : >minimal also Minimal definitions previous ;
69:
70: H
71:
72: >CROSS
73:
74: \ Variables 06oct92py
75:
76: -1 Constant NIL
77: Variable image
78: Variable tlast NIL tlast ! \ Last name field
79: Variable tlastcfa \ Last code field
80: Variable tdoes \ Resolve does> calls
81: Variable bit$
82: Variable tdp
83: : there tdp @ ;
84:
85: \ Parameter for target systems 06oct92py
86:
87: include machine.fs
88:
89: >TARGET
90:
91: \ Byte ordering and cell size 06oct92py
92:
93: : cell+ cell + ;
94: : cells cell<< lshift ;
95: : chars ;
96: : floats float * ;
97:
98: >CROSS
99: : cell/ cell<< rshift ;
100: >TARGET
101: 20 CONSTANT bl
102: -1 Constant NIL
103: -2 Constant :docol
104: -3 Constant :docon
105: -4 Constant :dovar
106: -5 Constant :douser
107: -6 Constant :dodoes
108: -7 Constant :doesjump
109:
110: >CROSS
111:
112: endian 0 pad ! -1 pad c! pad @ 0<
113: = [IF] : bswap ; immediate
114: [ELSE] : bswap ( big / little -- little / big ) 0
115: cell 1- FOR bits/byte lshift over
116: [ 1 bits/byte lshift 1- ] Literal and or
117: swap bits/byte rshift swap NEXT nip ;
118: [THEN]
119:
120: \ Memory initialisation 05dec92py
121: \ Fixed bug in else part 11may93jaw
122:
123: [IFDEF] Memory \ Memory is a bigFORTH feature
124: also Memory
125: : initmem ( var len -- )
126: 2dup swap handle! >r @ r> erase ;
127: toss
128: [ELSE]
129: : initmem ( var len -- )
130: tuck allocate abort" CROSS: No memory for target"
131: ( len var adr ) dup rot !
132: ( len adr ) swap erase ;
133: [THEN]
134:
135: \ MakeKernal 12dec92py
136:
137: >MINIMAL
138: : makekernal ( targetsize -- targetsize )
139: bit$ over 1- cell>bit rshift 1+ initmem
140: image over initmem tdp off ;
141:
142: >CROSS
143: \ Bit string manipulation 06oct92py
144: \ 9may93jaw
145: CREATE Bittable 80 c, 40 c, 20 c, 10 c, 8 c, 4 c, 2 c, 1 c,
146: : bits ( n -- n ) chars Bittable + c@ ;
147:
148: : >bit ( addr n -- c-addr mask ) 8 /mod rot + swap bits ;
149: : +bit ( addr n -- ) >bit over c@ or swap c! ;
150: : -bit ( addr n -- ) >bit invert over c@ and swap c! ;
151: : relon ( taddr -- ) bit$ @ swap cell/ +bit ;
152: : reloff ( taddr -- ) bit$ @ swap cell/ -bit ;
153:
154: \ Target memory access 06oct92py
155:
156: : align+ ( taddr -- rest )
157: cell tuck 1- and - [ cell 1- ] Literal and ;
158:
159: >TARGET
160: : aligned ( taddr -- ta-addr ) dup align+ + ;
161: \ assumes cell alignment granularity (as GNU C)
162:
163: >CROSS
164: : >image ( taddr -- absaddr ) image @ + ;
165: >TARGET
166: : @ ( taddr -- w ) >image @ bswap ;
167: : ! ( w taddr -- ) >r bswap r> >image ! ;
168: : c@ ( taddr -- char ) >image c@ ;
169: : c! ( char taddr -- ) >image c! ;
170: : 2@ ( taddr -- x1 x2 ) T dup cell+ @ swap @ H ;
171: : 2! ( x1 x2 taddr -- ) T swap over ! cell+ ! H ;
172:
173: \ Target compilation primitives 06oct92py
174: \ included A! 16may93jaw
175:
176: : here ( -- there ) there ;
177: : allot ( n -- ) tdp +! ;
178: : , ( w -- ) T here H cell T allot ! H ;
179: : c, ( char -- ) T here 1 allot c! H ;
180: : align ( -- ) T here H align+ 0 ?DO bl T c, H LOOP ;
181:
182: : A! dup relon T ! H ;
183: : A, ( w -- ) T here H relon T , H ;
184:
185: >CROSS
186:
187: \ threading modell 13dec92py
188:
189: \ generic threading modell
190: : docol, ( -- ) :docol T A, 0 , H ;
191:
192: >TARGET
193: : >body ( cfa -- pfa ) T cell+ cell+ H ;
194: >CROSS
195:
196: : dodoes, ( -- ) T :doesjump A, 0 , H ;
197:
198: \ Ghost Builder 06oct92py
199:
200: \ <T T> new version with temp variable 10may93jaw
201:
202: VARIABLE VocTemp
203:
204: : <T get-current VocTemp ! also Ghosts definitions ;
205: : T> previous VocTemp @ set-current ;
206:
207: 4711 Constant <fwd> 4712 Constant <res>
208: 4713 Constant <imm>
209:
210: \ iForth makes only immediate directly after create
211: \ make atonce trick! ?
212:
213: Variable atonce atonce off
214:
215: : NoExec true ABORT" CROSS: Don't execute ghost" ;
216:
217: : GhostHeader <fwd> , 0 , ['] NoExec , ;
218:
219: : >magic ; : >link cell+ ; : >exec cell+ cell+ ;
220: : >end 3 cells + ;
221:
222: : Make-Ghost ( "name" -- ghost )
223: >in @ GhostName swap >in !
224: <T Create atonce @ IF immediate atonce off THEN
225: here tuck swap ! ghostheader T>
226: DOES> >exec @ execute ;
227:
228: \ ghost words 14oct92py
229: \ changed: 10may93py/jaw
230:
231: : gfind ( string -- ghost true/1 / string false )
232: \ searches for string in word-list ghosts
233: \ !! wouldn't it be simpler to just use search-wordlist ? ae
234: dup count [ ' ghosts >body ] ALiteral search-wordlist
235: \ >r get-order 0 set-order also ghosts r> find >r >r
236: >r r@ IF >body nip THEN r> ;
237: \ set-order r> r@ IF >body THEN r> ;
238:
239: VARIABLE Already
240:
241: : ghost ( "name" -- ghost )
242: Already off
243: >in @ name gfind IF Already on nip EXIT THEN
244: drop >in ! Make-Ghost ;
245:
246: \ resolve 14oct92py
247:
248: : resolve-loop ( ghost tcfa -- ghost tcfa )
249: >r dup >link @
250: BEGIN dup WHILE dup T @ H r@ rot T ! H REPEAT drop r> ;
251:
252: \ exists 9may93jaw
253:
254: : exists ( ghost tcfa -- )
255: over GhostNames
256: BEGIN @ dup
257: WHILE 2dup cell+ @ =
258: UNTIL
259: nip 2 cells + count cr ." CROSS: Exists: " type 4 spaces
260: swap cell+ !
261: ELSE true ABORT" CROSS: Ghostnames inconsistent"
262: THEN ;
263:
264: : resolve ( ghost tcfa -- )
265: over >magic @ <fwd> <> IF exists EXIT THEN
266: resolve-loop over >link ! <res> swap >magic ! ;
267:
268: \ gexecute ghost, 01nov92py
269:
270: : do-forward ( ghost -- )
271: >link dup @ there rot ! T A, H ;
272: : do-resolve ( ghost -- )
273: >link @ T A, H ;
274:
275: : gexecute ( ghost -- ) dup @
276: <fwd> = IF do-forward ELSE do-resolve THEN ;
277: : ghost, ghost gexecute ;
278:
279: \ .unresolved 11may93jaw
280:
281: variable ResolveFlag
282:
283: \ ?touched 11may93jaw
284:
285: : ?touched ( ghost -- flag ) dup >magic @ <fwd> = swap >link @
286: 0 <> and ;
287:
288: : ?resolved ( ghostname -- )
289: dup cell+ @ ?touched
290: IF cell+ cell+ count cr type ResolveFlag on ELSE drop THEN ;
291:
292: >MINIMAL
293: : .unresolved ( -- )
294: ResolveFlag off cr ." Unresolved: "
295: Ghostnames
296: BEGIN @ dup
297: WHILE dup ?resolved
298: REPEAT drop ResolveFlag @ 0= IF ." Nothing!" THEN cr ;
299:
300: >CROSS
301: \ Header states 12dec92py
302:
303: : flag! ( 8b -- ) tlast @ dup >r T c@ xor r> c! H ;
304:
305: VARIABLE ^imm
306:
307: >TARGET
308: : immediate 20 flag!
309: ^imm @ @ dup <imm> = ?EXIT
310: <res> <> ABORT" CROSS: Cannot immediate a unresolved word"
311: <imm> ^imm @ ! ;
312: : restrict 40 flag! ;
313: >CROSS
314:
315: \ ALIAS2 ansforth conform alias 9may93jaw
316:
317: : ALIAS2 create here 0 , DOES> @ execute ;
318: \ usage:
319: \ ' alias2 bla !
320:
321: \ Target Header Creation 01nov92py
322:
323: : string, ( addr count -- )
324: dup T c, H bounds DO I c@ T c, H LOOP ;
325: : name, ( "name" -- ) name count string, T align H ;
326: : view, ( -- ) ( dummy ) ;
327:
328: VARIABLE CreateFlag CreateFlag off
329:
330: : (Theader ( "name" -- ghost ) T align H view,
331: tlast @ dup 0> IF T 1 cells - THEN A, H there tlast !
332: >in @ name, >in ! T here H tlastcfa !
333: CreateFlag @ IF
334: >in @ alias2 swap >in ! \ create alias in target
335: >in @ ghost swap >in !
336: swap also ghosts ' previous swap ! \ tick ghost and store in alias
337: CreateFlag off
338: ELSE ghost THEN
339: dup >magic ^imm ! \ a pointer for immediate
340: Already @ IF dup >end tdoes !
341: ELSE 0 tdoes ! THEN
342: 80 flag! ;
343:
344: VARIABLE ;Resolve 1 cells allot
345:
346: : Theader ( "name" -- ) (THeader there resolve 0 ;Resolve ! ;
347:
348: >TARGET
349: : Alias ( cfa -- ) \ name
350: (THeader over resolve T A, H 80 flag! ;
351: >CROSS
352:
353: \ Conditionals and Comments 11may93jaw
354:
355: : ;Cond
356: postpone ;
357: swap ! ; immediate
358:
359: : Cond: ( -- ) \ name {code } ;
360: atonce on
361: ghost
362: >exec
363: :NONAME ;
364:
365: : restrict? ( -- )
366: \ aborts on interprete state - ae
367: state @ 0= ABORT" CROSS: Restricted" ;
368:
369: : Comment ( -- )
370: >in @ atonce on ghost swap >in ! ' swap >exec ! ;
371:
372: Comment ( Comment \
373:
374: \ Predefined ghosts 12dec92py
375:
376: ghost 0= drop
377: ghost branch ghost ?branch 2drop
378: ghost (do) ghost (?do) 2drop
379: ghost (for) drop
380: ghost (loop) ghost (+loop) 2drop
381: ghost (next) drop
382: ghost unloop ghost ;S 2drop
383: ghost lit ghost (compile) ghost ! 2drop drop
384: ghost (;code) ghost noop 2drop
385: ghost (.") ghost (S") ghost (ABORT") 2drop drop
386: ghost '
387:
388: \ compile 10may93jaw
389:
390: : compile ( -- ) \ name
391: restrict?
392: name gfind dup 0= ABORT" CROSS: Can't compile "
393: 0> ( immediate? )
394: IF >exec @ compile,
395: ELSE postpone literal postpone gexecute THEN ;
396: immediate
397:
398: >TARGET
399: : ' ( -- cfa ) name gfind 0= ABORT" CROSS: undefined "
400: dup >magic @ <fwd> = ABORT" CROSS: forward " >link @ ;
401:
402: Cond: ['] compile lit ghost gexecute ;Cond
403:
404: >CROSS
405: \ tLiteral 12dec92py
406:
407: : lit, ( n -- ) compile lit T , H ;
408: : alit, ( n -- ) compile lit T A, H ;
409:
410: >TARGET
411: Cond: Literal ( n -- ) restrict? lit, ;Cond
412: Cond: ALiteral ( n -- ) restrict? alit, ;Cond
413:
414: : Char ( "<char>" -- ) bl word char+ c@ ;
415: Cond: [Char] ( "<char>" -- ) restrict? Char lit, ;Cond
416:
417: >CROSS
418: \ Target compiling loop 12dec92py
419: \ ">tib trick thrown out 10may93jaw
420: \ number? defined at the top 11may93jaw
421:
422: \ compiled word might leave items on stack!
423: : tcom ( in name -- )
424: gfind ?dup IF 0> IF nip >exec @ execute
425: ELSE nip gexecute THEN EXIT THEN
426: number? dup IF 0> IF swap lit, THEN lit, drop
427: ELSE 2drop >in !
428: ghost gexecute THEN ;
429:
430: >TARGET
431: \ : ; DOES> 13dec92py
432: \ ] 9may93py/jaw
433:
434: : ] state on
435: BEGIN
436: BEGIN >in @ name
437: dup c@ 0= WHILE 2drop refill 0=
438: ABORT" CROSS: End of file while target compiling"
439: REPEAT
440: tcom
441: state @
442: 0=
443: UNTIL ;
444:
445: \ by the way: defining a second interpreter (a compiler-)loop
446: \ is not allowed if a system should be ans conform
447:
448: : : ( -- colon-sys ) \ Name
449: (THeader ;Resolve ! there ;Resolve cell+ !
450: docol, depth T ] H ;
451:
452: Cond: EXIT ( -- ) restrict? compile ;S ;Cond
453:
454: Cond: ?EXIT ( -- ) 1 abort" CROSS: using ?exit" ;Cond
455:
456: Cond: ; ( -- ) restrict?
457: depth ?dup IF 1- <> ABORT" CROSS: Stack changed"
458: ELSE true ABORT" CROSS: Stack empty" THEN
459: compile ;S state off
460: ;Resolve @
461: IF ;Resolve @ ;Resolve cell+ @ resolve THEN
462: ;Cond
463: Cond: [ restrict? state off ;Cond
464:
465: >CROSS
466: : !does :dodoes tlastcfa @ tuck T ! cell+ ! H ;
467:
468: >TARGET
469: Cond: DOES> restrict?
470: compile (;code) dodoes, tdoes @ ?dup IF @ T here H resolve THEN
471: ;Cond
472: : DOES> dodoes, T here H !does depth T ] H ;
473:
474: >CROSS
475: \ Creation 01nov92py
476:
477: \ Builder 11may93jaw
478:
479: : Builder ( Create do: "name" -- )
480: >in @ alias2 swap dup >in ! >r >r
481: Make-Ghost rot swap >exec ! ,
482: r> r> >in !
483: also ghosts ' previous swap !
484: DOES> dup >exec @ execute ;
485:
486: : gdoes, ( ghost -- ) >end @ dup >magic @ <fwd> <>
487: IF dup >link @ dup 0< IF T A, 0 , H drop EXIT THEN drop THEN
488: :dodoes T A, H gexecute T here H cell - reloff ;
489:
490: : TCreate ( ghost -- )
491: CreateFlag on
492: Theader dup gdoes,
493: >end @ >exec @ execute ;
494:
495: : Build: ( -- [xt] [colon-sys] )
496: :noname postpone TCreate ;
497:
498: : gdoes> ( ghost -- addr flag )
499: state @ IF gexecute true EXIT THEN
500: cell+ @ T >body H false ;
501:
502: \ DO: ;DO 11may93jaw
503: \ changed to ?EXIT 10may93jaw
504:
505: : (does>) postpone does> ; immediate \ second level does>
506:
507: : DO: ( -- addr [xt] [colon-sys] )
508: here ghostheader
509: :noname
510: postpone (does>) postpone gdoes> postpone ?EXIT ;
511:
512: : ;DO ( addr [xt] [colon-sys] -- )
513: postpone ; ( S addr xt )
514: over >exec ! ; immediate
515:
516: : by ( -- addr ) \ Name
517: ghost >end @ ;
518:
519: >TARGET
520: \ Variables and Constants 05dec92py
521:
522: Build: ;
523: DO: ( ghost -- addr ) ;DO
524: Builder Create
525: by Create :dovar resolve
526:
527: Build: T 0 , H ;
528: by Create
529: Builder Variable
530:
531: Build: T 0 A, H ;
532: by Create
533: Builder AVariable
534:
535: \ User variables 04may94py
536:
537: >CROSS
538: Variable tup 0 tup !
539: Variable tudp 0 tudp !
540: : u, ( n -- udp )
541: tup @ tudp @ + T ! H
542: tudp @ dup cell+ tudp ! ;
543: : au, ( n -- udp )
544: tup @ tudp @ + T A! H
545: tudp @ dup cell+ tudp ! ;
546: >TARGET
547:
548: Build: T 0 u, , H ;
549: DO: ( ghost -- up-addr ) T @ H tup @ + ;DO
550: Builder User
551: by User :douser resolve
552:
553: Build: T 0 u, , 0 u, drop H ;
554: by User
555: Builder 2User
556:
557: Build: T 0 au, , H ;
558: by User
559: Builder AUser
560:
561: Build: ( n -- ) T , H ;
562: DO: ( ghost -- n ) T @ H ;DO
563: Builder Constant
564: by Constant :docon resolve
565:
566: Build: ( n -- ) T A, H ;
567: by Constant
568: Builder AConstant
569:
570: Build: T 0 , H ;
571: by Constant
572: Builder Value
573:
574: Build: ( -- ) compile noop ;
575: DO: ( ghost -- ) ABORT" CROSS: Don't execute" ;DO
576: Builder Defer
577:
578: \ structural conditionals 17dec92py
579:
580: >CROSS
581: : ?struc ( flag -- ) ABORT" CROSS: unstructured " ;
582: : sys? ( sys -- sys ) dup 0= ?struc ;
583: : >mark ( -- sys ) T here 0 , H ;
584: : >resolve ( sys -- ) T here over - swap ! H ;
585: : <resolve ( sys -- ) T here - , H ;
586: >TARGET
587:
588: \ Structural Conditionals 12dec92py
589:
590: Cond: BUT restrict? sys? swap ;Cond
591: Cond: YET restrict? sys? dup ;Cond
592:
593: >CROSS
594: Variable tleavings
595: >TARGET
596:
597: Cond: DONE ( addr -- ) restrict? tleavings @
598: BEGIN 2dup u> 0= WHILE dup T @ H swap >resolve REPEAT
599: tleavings ! drop ;Cond
600:
601: >CROSS
602: : (leave T here H tleavings @ T , H tleavings ! ;
603: >TARGET
604:
605: Cond: LEAVE restrict? compile branch (leave ;Cond
606: Cond: ?LEAVE restrict? compile 0= compile ?branch (leave ;Cond
607:
608: \ Structural Conditionals 12dec92py
609:
610: Cond: AHEAD restrict? compile branch >mark ;Cond
611: Cond: IF restrict? compile ?branch >mark ;Cond
612: Cond: THEN restrict? sys? dup T @ H ?struc >resolve ;Cond
613: Cond: ELSE restrict? sys? compile AHEAD swap compile THEN ;Cond
614:
615: Cond: BEGIN restrict? T here H ;Cond
616: Cond: WHILE restrict? sys? compile IF swap ;Cond
617: Cond: AGAIN restrict? sys? compile branch <resolve ;Cond
618: Cond: UNTIL restrict? sys? compile ?branch <resolve ;Cond
619: Cond: REPEAT restrict? over 0= ?struc compile AGAIN compile THEN ;Cond
620:
621: \ Structural Conditionals 12dec92py
622:
623: Cond: DO restrict? compile (do) T here H ;Cond
624: Cond: ?DO restrict? compile (?do) (leave T here H ;Cond
625: Cond: FOR restrict? compile (for) T here H ;Cond
626:
627: >CROSS
628: : loop] dup <resolve cell - compile DONE compile unloop ;
629: >TARGET
630:
631: Cond: LOOP restrict? sys? compile (loop) loop] ;Cond
632: Cond: +LOOP restrict? sys? compile (+loop) loop] ;Cond
633: Cond: NEXT restrict? sys? compile (next) loop] ;Cond
634:
635: \ String words 23feb93py
636:
637: : ," [char] " parse string, T align H ;
638:
639: Cond: ." restrict? compile (.") T ," H ;Cond
640: Cond: S" restrict? compile (S") T ," H ;Cond
641: Cond: ABORT" restrict? compile (ABORT") T ," H ;Cond
642:
643: Cond: IS T ' >body H compile ALiteral compile ! ;Cond
644: : IS T ' >body ! H ;
645: Cond: TO T ' >body H compile ALiteral compile ! ;Cond
646: : TO T ' >body ! H ;
647:
648: \ LINKED ERR" ENV" 2ENV" 18may93jaw
649:
650: \ linked list primitive
651: : linked T here over @ A, swap ! H ;
652:
653: : err" s" ErrLink linked" evaluate T , H
654: [char] " parse string, T align H ;
655:
656: : env" [char] " parse s" EnvLink linked" evaluate
657: string, T align , H ;
658:
659: : 2env" [char] " parse s" EnvLink linked" evaluate
660: here >r string, T align , , H
661: r> dup T c@ H 80 and swap T c! H ;
662:
663: \ compile must be last 22feb93py
664:
665: Cond: compile ( -- ) restrict? \ name
666: name gfind dup 0= ABORT" CROSS: Can't compile"
667: 0> IF gexecute
668: ELSE dup >magic @ <imm> =
669: IF gexecute
670: ELSE compile (compile) gexecute THEN THEN ;Cond
671:
672: Cond: postpone ( -- ) restrict? \ name
673: name gfind dup 0= ABORT" CROSS: Can't compile"
674: 0> IF gexecute
675: ELSE dup >magic @ <imm> =
676: IF gexecute
677: ELSE compile (compile) gexecute THEN THEN ;Cond
678:
679: >MINIMAL
680: also minimal
681: \ Usefull words 13feb93py
682:
683: : KB 400 * ;
684:
685: \ define new [IFDEF] and [IFUNDEF] 20may93jaw
686:
687: : there? name gfind IF >magic @ <fwd> <> ELSE drop false THEN ;
688:
689: : [IFDEF] there? postpone [IF] ;
690: : [IFUNDEF] there? 0= postpone [IF] ;
691:
692: \ C: \- \+ Conditional Compiling 09jun93jaw
693:
694: : C: >in @ there? 0=
695: IF >in ! T : H
696: ELSE drop
697: BEGIN bl word dup c@
698: IF count comment? s" ;" compare 0= ?EXIT
699: ELSE refill 0= ABORT" CROSS: Out of Input while C:"
700: THEN
701: AGAIN
702: THEN ;
703:
704: also minimal
705:
706: : \- there? IF postpone \ THEN ;
707: : \+ there? 0= IF postpone \ THEN ;
708:
709: : [IF] postpone [IF] ;
710: : [THEN] postpone [THEN] ;
711: : [ELSE] postpone [ELSE] ;
712:
713: Cond: [IF] [IF] ;Cond
714: Cond: [IFDEF] [IFDEF] ;Cond
715: Cond: [IFUNDEF] [IFUNDEF] ;Cond
716: Cond: [THEN] [THEN] ;Cond
717: Cond: [ELSE] [ELSE] ;Cond
718:
719: \ save-cross 17mar93py
720:
721: \ i'm not interested in bigforth features this time 10may93jaw
722: \ [IFDEF] file
723: \ also file
724: \ [THEN]
725: \ included throw after create-file 11may93jaw
726:
727: endian Constant endian
728:
729: : save-cross ( "name" -- )
730: bl parse ." Saving to " 2dup type
731: w/o bin create-file throw >r
732: image @ there r@ write-file throw
733: bit$ @ there 1- cell>bit rshift 1+ r@ write-file throw
734: r> close-file throw ;
735:
736: \ words that should be in minimal
737:
738: : + + ; : 1- 1- ;
739: : - - ; : 2* 2* ;
740: : dup dup ; : over over ;
741: : swap swap ; : rot rot ;
742:
743: \ include bug5.fs
744: \ only forth also minimal definitions
745:
746: : \ postpone \ ;
747: : ( postpone ( ;
748: : include bl word count included ;
749: : .( [char] ) parse type ;
750: : cr cr ;
751:
752: : times 0 ?DO dup T c, H LOOP drop ; \ used for space table creation
753: only forth also minimal definitions
754:
755: \ cross-compiler words
756:
757: : decimal decimal ;
758: : hex hex ;
759:
760: : tudp T tudp H ;
761: : tup T tup H ; minimal
762:
763: \ for debugging...
764: : order order ;
765: : words words ;
766: : .s .s ;
767:
768: : bye bye ;
769:
770: \ turnkey direction
771: : H forth ; immediate
772: : T minimal ; immediate
773: : G ghosts ; immediate
774:
775: : turnkey 0 set-order also Target definitions
776: also Minimal also ;
777:
778: \ these ones are pefered:
779:
780: : lock turnkey ;
781: : unlock forth also cross ;
782:
783: unlock definitions also minimal
784: : lock lock ;
785: lock
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